Kerendia 20 mg Tablet is used to treat Chronic kidney disease (CKD). It contains the active substance finerenone. It works by blocking the action of certain hormones (mineralocorticoids) that can damage your kidneys and heart. Common side effects of Kerendia 20 mg Tablet may include high potassium level (hyperkalaemia), weakness or tiredness, feeling sick (nausea), numbness in the hands and lips, decreased pulse rate, low sodium level (hyponatraemia), fatigue, headache, confusion, muscle weakness, spasms or cramps and high uric acid level (hyperuricaemia).